Satisfy code climate

lib/open_project/page_hierarchy_helper.rb

@@ -50,14 +50,7 @@ module OpenProject
 
     def render_hierarchy_item(page, is_parent, options = {})
       content_tag(:span, class: 'tree-menu--item', slug: page.slug) do
-        hierarchy_span_content = if is_parent
-                                   render_hierarchy_indicator_icons
-                                 else
-                                   render_leaf_indicator
-                                 end
-
-        concat content_tag(:span, hierarchy_span_content, class: 'tree-menu--hierarchy-span')
-
+        concat content_tag(:span, hierarchy_span_content(is_parent), class: 'tree-menu--hierarchy-span')
         concat link_to(page.title,
                        Rails.application.routes.url_helpers.project_wiki_path(page.project, page),
                        title: hierarchy_item_title(options, page),
@@ -66,6 +59,14 @@ module OpenProject
       end
     end
 
+    def hierarchy_span_content(is_parent)
+      if is_parent
+        render_hierarchy_indicator_icons
+      else
+        render_leaf_indicator
+      end
+    end
+
     def hierarchy_item_title(options, page)
       if options[:timestamp] && page.updated_on
         ::I18n.t(:label_updated_time, value: distance_of_time_in_words(Time.now, page.updated_on))